Air control for internal combustion engines



May 12, 1931. J. c. GORDON AIR CONTROL FOR INTERNAL COMBUSTION ENGINES Filed April 2, 1930 mumnnk i'a I 'HIIHIIND i 01 WW INVENTOR JAMES C. Gannon ATTORNEY.

Patented May 12, 1931 r OFFICE.

JALEES C. GOBDGN, 0.1 LOS ANGELES, CALIFORNIA AIR oonraoLron-rnrnnnar. oorasns'r on ENGINES i Application filed April 2, 1830. Serial No. i -40,9 65.

This invention relates to. an air control for internal combustion engines wherebyvaried quantities of air are admitted to the intake manifold of the engine as the quantity of fuel is varied in the carbureter.

An object of my invention is to provide a novel air control for internal combustion engines, the needle valve of which is con- I nected to, and operable by the carbureter gas 10 control lever.

Another object is to provide a novel means of regulating the amount of lift of the air control valve by a manually adjustable pivot.

A further object is to provide an air con- 15 trol of the character stated which is applicable to various types of engines. 7

Other objects, advantages, and features of invention may appear from the accompanying drawing, the subjoined detailed descrip- 2 tion, and the appended claims.

In the drawings:

Figure 1 is a transverse, sectional view of my control.

Figure2 is a sectional view taken on line '25 22 of Figure 1.

Figure 3 is a side elevation of the control valve. V

Figure 4 is a side elevation of my air control in operative position. 30 Figure 5 is aside elevation of a slightly modified form of pivot adjustment.

Figure 6 is a side elevation of still another form of pivot adjustment. I Referring more particularly, to the draw- 35 ings, the numeral 1 indicates a case which is suitably attached to a convenient part of the vehicle, such as theintake manifold. air inlet port 2 is provided in the case 1. A fitting 3 extends from one side of the case 1 and a pipe 4 is coupled to the fitting and extends into the engine intake manifold 5. The air which passes out of the fitting 3 is controlled by'a needle valve Gwhich fits into a block seat- 7 and the valve is slidable in the block. The block seat] has a tapered seat 8 therein upon which the needle valve rests. A plurality of ports '9 are also provided in the block, the ports being above the seat 8 and as the needle valve is raised by a means to be further descr bed, Mr passes through the ports 9 and thence into the fittingS and to the intake manifold. The block 7 acts both as'a guide and to prevent any foreign material from lodging on the seat A control rod 10 extends through the case .35 1 and is guided therein. A spring 11 bears against a head 12 thus normally holding the rod 10 in raised position. A nut 13 on the rod, limits the upward travel thereof. The rod 10 is moved simultaneously and synchronously with the accelerator lever 14:. of the carbureter. The lever limay be controlled by either the hand or the foot.

A link 15 is pivotally connected to the le ver 14 and to an operating lever 16, which a; lever is here shown as a bell crank, one end of which is attachable to the, rod 10 and the link 15 is ivotally connectedto the other end thereo The lever 1% moves in the direction of thearrow in Figure 4 when the i so engine is accelerated. i

A link 1? ispivotally secured at one end thereof to the rod 10 and the other end. there.- ofis provided with an enlarged loop 18. The needle valve 6 slotted as at 19 so as to receive the loop 18. A pin 20 extends through the valve and the loop bears against the pin to raise the valve when air is to be admitted to the manifold. A. slot 21 is provided in the link 17 which communicates with the to loop 18, and the throw ofthe outer loop and of the link is varied by the following means: A block 22 is mountedupon a threaded at justing bolt 23, said bolt beingrotatable bf. a knurled head 24-. A pin 25 projects from the block 22 into the slot 21 and the link pivots about the pin. It will be evident that as the block 22 is moved along thethreaded bolt 23, that the throw of the outer end of the link will be varied. When the pin 25 is moved into the loop 18, there will be no appreciable movement of the throw end of the link, and consequently, no additional air will be admitted: to the manifold. That is, tl e loop drops in. the slot 19 and the pin 25 is at .thetop of the loop which is clear of the pin 20. Stops.2626 are provided in-the case 1 'to limitthe .movementof the block along the threaded-bolt.

Various other. means mayv be employed. to

adjust the block, namely that shown in Figures 5 and 6. In Figure 5 the block 27 is slidable on a rod 28 and is manually adjusted by a push rod'29 which extends out through the Wall of the case. In Figure 6, the block 30 is slidably mounted on a rod 31 and the ends of a cable 32 are secured to the block. The cable extends over sheaves 33 34;, which sheaves are pivotally mounted on the rod 31. One of the sheaves is exposed through the Wall of the case so that it may be readily rotated to adjust the block.

Having described by inventionl claim:

1. An air control for internal combustion engines, comprising a case, an outlet fitting extending from the case, a valve adapted to close said outlet fitting, a rod extending into the case, a link pivotally secured to the rod, a loop on the free end of the link, a pin extending through the valve and through the loop, a blockadjustably mounted in the case, said link having a slot therein. a pin extending from the block into the slot, and manual means to adjust said block relative to the link.

' ing from the block into the slot, a threaded bolt extending into the case, said block being mounted on the threaded bolt and a head on the bolt whereby it is rotated to adjust said block.

3. An air control for internal combustion engines comprising a case, an outlet fitting, a seat in the case, a. needle valve resting in the seat whereby the outlet to the fitting is controlled, a rod extending through the case, spring means urging said rod into raised position, a link pivotally secured'to the rod the free end of said link'being formed in a loop, a pin extending through the needle valve and through the loop, a block in the case, said link having a slot therein extending to the loop, apin extending from the block into the slot, and manual means to adjust said block relative'to the link.

4. An air control for internal combustion engines comprising a'case, an outlet fitting,

" a seat in the case, a needle valve resting in the seat whereby the outlet to the fitting is controlled, a rod extending through the case,

spring means urging said rod intoraised position, a link pivotally secured to the rod, the free end of said linkbeing' formed in a loop, a pin extending through the needle valve and through the loop, a block in the case,said link having a slot therein extending' to the loop, a pin extending from the JAMES C. GORDON. 

